CHAPTER 6 SERIES & PARALLEL OPERATION
28
6-1-4. Series function descriptions
a.
Verify the series wiring of “series in”.
b. Priority of power ON operation: Master unit first and then Slave unit.
c. Priority of power OFF operation: Slave unit first and then Master unit.
d. Set the PSOP function in the MENU as SM for the Master unit.
e. Set the PSOP function in the MENU as SS for the Slave unit.
f. To ensure the protection function will work properly, please set a higher OVP/OCP value for the
SLAVE unit.
g. After setting, the output ON/FF is controlled by MASTER.
h. The MASTER shows the output current and the output voltage of single unit, and the SLAVE
shows the output voltage of single unit only.
i. The voltage monitoring functions, The APG connector Pin#20 (V MON) of MASTER and SLAVE
are functional when these 2 units are used in series. The total output voltage = MASTER voltage
+ SLAVE voltage.
j. The current monitoring functions, The APG connector Pin#22 (A MON) of MASTER and SLAVE
are functional when these 2 units are used in series.
k. When operated in series, the protection function of the MASTER, Pin#9 (ALM STATUS) of APG
connector, is functional. If the MASTER acts abnormally, its protection function will be activated
to shut down both of MASTER and SLAVE.
l. When operated in series, the protection function of the SLAVE, Pin#9 (ALM STATUS) of APG, is
functional. If the SLAVE acts abnormally, its protection function will be activated and cause the
MASTER to turn off the output.
m. When PR/PD is operated under the series mode and in the remote control, only MASTER can be
operated and controlled by remote commands.
n. When changing the operation mode of the DC power supplies under series operation to a single
unit operation, please turn off the power. Also remove the wires that are connected to “series in”
and output connector wires. To change the PSOP (Parallel/Series operation) to PM (parallel
master) in the Menu.
